A thin, circular, metallic or nonmetallic item with a flat or prebulged cross-sectional shape, designed to rupture at a predetermined pressure to prevent damage to hydraulic or pneumatic systems, or the like. It may include multiple pieces, such as a retainer ring, disk and vacuum support. It can be used independently or as a component part of a head, safety, pressure relief. For items furnished with a holder, see head and disk, safety, pressure relief. For items without a rupture pressure rating, see disk, solid, plain. Excludes diaphragm, valve, flat; diaphragm, valve, special shaped; disk, valve; and insulator, disk.
Classification: Parts of taps, cocks, valves and similar appliances, nesoi
NSN 4140-01-349-6885
NSN 5960-00-902-0942
NSN 6620-01-526-2857
NSN 6240-01-507-3609
NSN 6145-01-042-2958
NSN 6240-01-409-2465
NSN 5990-00-113-6137
NSN 5905-01-069-6109
NSN 5998-01-474-7685
NSN 5925-00-826-8887
NSN 6220-00-910-0320
NSN 7035-01-445-3563